Cushioned clamp cylinder with proximity switches

Details Cushioned clamp cylinder with proximity switches Cushioned clamp cylinder with proximity switches

1986-03-06

1987-07-21

Macon, Robert S.

Electricity: circuit makers and breakers

Fluid pressure

Piston

200 82R, 200 34, 200 82A, H01H 3538

Patent

active

046819924

ABSTRACT:
A cushioned clamp cylinder with proximity switches includes a cap of square shape defining a plurality of right angularly related end faces with a cushion chamber in the cap and a sensing port in each end face communicating with the cushion chamber. A normally open proximity switch is selectively positioned in one of the sensing ports adjacent the chamber; one sensing port is connected to a pressure conduit and the other two sensing ports are plugged. A piston rod mounting a piston is positioned within the cylinder and mounts an inductive sleeve movable into the cushion chamber to activate the proximity switch. A flexible annular insert ring is positioned within the cap and has a wiping bead which extends into the cushion chamber and seals over the sleeve sealing the cushion chamber providing a pressure build-up and bringing the piston to a smooth stop as it bottoms out within the cylinder. A bleed screw is adjustably threaded into the cap and communicates with the cushion chamber.

REFERENCES:
patent: 816348 (1906-03-01), Miller
patent: 1679212 (1928-07-01), Forman
patent: 3374320 (1968-03-01), Buhler et al.

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